Radiator-filler cap



May 6, 1930. J. F. WILSON RADIATOR FILLER on Filed March 2, 1929Patented May 6, 1930 UNITED STATES PATENT OFFICE JOHN F. WILSON, OFDETROIT, MICHIGAN, ASSIGNOR TO GENERAL MOTORS CORPORA- TION, OF DETROIT,MICHIGAN, A CORPORATION OF DELAWARE RADIATOR-FILLER CAP Applicationfiled March 2,

i The present invention in caps, although involvlng elements of artistlcmer1t,1s directed partlcularly to utilitarian features; and it aimsparticularly to provide a simple and attractive cap or closureorganization which includes, (1.) an annular body, (2) a pivoted lid ortop plate, and (3) rotative means, 111- volving no'use of-threads,.foreasily but releasably securing said lid in a sufficiently tightrelationship to said annular body,which may be threaded to a usual orspecial tubular element, such as a flanged filler pipe at the top of aradiator or the like.

It is an object of this invention to provide, in a filler cap, cammeans, preferably comprising a peripheral ring provided with aprojectinghandle, for normally securing a pivoted lid or top plate inengagement with an annular body within which said ring may bepermanently but slidably seated in a man ner permitting a limitedrotation thereof;

and, in preferred embodiments of this intat ve movement, for a lockingand unlocking 0amobjects of thisinvention, in which said lid or platemay be provided with a notched downward projection engageable by a camsurface upon thementioned ring, and

in which said ringmay be so held in an annular depression by an outsidecollar as to permit and to limit the mentloned sliding romentionedlatch, and which said latch may be provided with means obviatingunintended release thereof,may be best appreciated from the followingdescription of an illustrative embodiment of said invention, taken 1ncon- 1929. Serial No. 344,008.

nection with the appended claims and the accompanying drawings.

Fig. l is a front elevational view, showing an embodiment of theinvention as applied to a radiator filler pipe. 1

Fig. 2 is a vertical section taken substantially as indicated by theline 22 of Fig. 1.

Fig. 3 is a horizontal sectional view, taken substantially as indicatedby the line 3-3 of Fig. 2.

Fig. 4 is a perspective view, taken substantially as indicated by arrowsat of Figs. 2 and after referred to.

In that embodiment of my invention which has been selected forillustration, a filler pipe 11 is shown as provided with both aninturned flange 12 and an externally threaded portion l3,the latterbeing adapted to engage corresponding internal threads upon 1L5bOClylei, shown as pivotally carrying a lid The body 14 is shown as annularinform, as provided with upstanding ears or an up standing lug 16 throughwhich extends a pin 17 for the pivotal connection of said lid member,and as provided with a downwardly facing annular depression 18 withinwhich a threadless locking ring 19 may be retained by means such as anoutside collar 20. In preference to threading this collar upon the capbody, it may be retained by means such as a set screw 21, the laterbeing shown as serving also to securethe entire cap against rotationupon the tubular member 11. i

The body member 14 isshown as comprising an inner cylindrical element 22and a horizontal web s3 so formed and proportioned as to provideoppositely facing annular chan- 3, but showing only a locking ring, ashereinnels or depressions 24 and25, respectively adapted to receiveannular gaskets 26 and 27; and said gaskets may be respectively advancedby resilient means such as annular plates 28, 29 respectively providedwith series of integral and off-set spring tongues 30, 31,the lowergasket 27 being thereby pressed into engagement with the flange 12, orits equivalent, and the upper gasket 26 being shown as normallycontacting with an annular projection 32, integral with the lid 15.

It is an incidental but important merit of the described constructionthat, upon the release of whatever latching meansmay be employed to holdthe lid in itsclosed position, the mentioned annular spring means, orany equivalent resilient means disposed beneath the gasket 26,automatically elevates "the: said lidto a sufficient-angle toobviate-the necessity for providing any handle fihereon, although notnecessarily to such anrangle .as is suggested by dot-and-dash lines at15, Fig. 2.

In preference to mounting any peripheral locking ring thereon, itllfilid 15 .011 its equivalent (whether ornamented or :merely "providedwitha roundedxor substantially conical upperxsurfaee, as suggested at.33), include or carry'a doWnwardp-rojeotion 34,- shown .as so notched:at taste constitute the same a hook or latch inember, to provide aninterlocking engagement with ,a cooperating part .36 of the mentionedrotatively slidable ring 19; and said ring is shown asp'rovifded with acam surface 37', disposed between a notch .88, through "whichtheprojection .34 maybe depressed, and an ornamental handle 39. Theprojection 34 is shown'as provided withanoutwardly extending-lip 4:0,engage- .a-bleby the cams surface 37:; and the ring 19 is shown as;provided,-directly beneath the i handle 89.,with a notch .il into whichthe lip may be-permitted to snap, fora releasable interlocking effect,upon therotation of said ring from the dotted line position shown inFig. 3 to the full line position shown in Figs. :1, 2'an1d 3..

The mode .of operation having been --.fully ;indicated inf-connectionwith the foregoing description, it be noted theta notch in a flange 43.,which constitutes an outer wall ofthe peripheral depression in which thering 19 is rot atively slidable, may be of such length asto preventmovement of the ring-19 beyond the respective positionssuggested in Fig..3 and-the clearances provided there y, .as at 4,4, Fig. 2, should besliilicient to permit the front of said ring to be resiliently elevated,at will, to a degreesuiiicient for the release of the lip 40- froni thenotch 11.

that numerous inodiiiations not suggested herein -might-easi ly bedevised,without involvingthe slightest from the present inven- 'tion.

I claim: I

1. Aradiator filler cap comprising: a body member; a iClQSllIFe platemember pi-voted thereto; a th-readless locking ining member peripherallycarried by one of: said members and provided with means toholdt-heotherof said members thereto,-.said last mentioned member :being providedwithca hook and said ring inember'being provided With :a notch"throughwhichsaid book may extend and also with a surface adjacent saidnotch.

2. A-radiator filler cap comprising :ianannul-ar body member; aclosureplate member pivoted thereto; and "a tliieadless peripheral camring member 'rotativelyslidaable upon oi-reef said-members andconstituting means to engageand-drawtheiother ofsaidmembers thereto.

3. A-radiator iillercap comprising: 2111x3111- nular body member;a-closureplate member movable relativelythereto; and a @threadlessperipheral cam member which is irotatively slid-able upon one of saidmbers constituting means to engage and-draw the other of said :membersthereto-,-tiwo:of-ssaid members being respectively ;provi.ded'W'llt/hfifi annula-r depression to receive agasketand with acorresponding annular projection tocompress sa i-d; gasket.

4%. .A- radiator filler carp comprising arrann-u'la-r body member; .aclosure plate member pivoted thereto; :andga ltllI'QEtCll'BSS peripheralcainmember which isrotativelylslidabie upon one of said members andconstitutes mean-s'to engage and draw the-.other'of said membersther.eto,said cam member being provided with a handle and said bodymember being provided with'both an-annularpassage to receive said camand a notch .so shaped as to permit a limited relative movement betweenparts of said members. i

.5. A ,radiator'filler cap comprising: an annular body member; a closureplate member pivoted thereto; and ath-readless peripheral cammember-which'is rotatively slidab'le upon one of-said membersand-constitutes means to engagea-nd draw the otherof said members-1'Cl161-6t0,''-Sa1fil cam member being integral with a ring, and saidringbeing retained, in a depression provided in said body-member; bymeans of anoutside collar.

6. A radiator filler .capcomprising v: an annular body member; a closureplate member pivoted thereto; and a threadless peripheral cam memberwhich is rotatively slidable upon one of said members and constitutesmeans to engage and draw the other of said members thereto,said cammember being integral with a ring and being retained, in a depressionprovided in said body member, by means of an outside collar extendinginto said depression and secured by means which serve also to securesaid body member upon a tubular element.

7. For use in a radiator filler cap of the general character described:a body member provided with oppositely facing depressions betweencylindrical walls for the reception of gaskets, each of said depressionscontaining resilient means for yieldably supporting a gasket, and saiddepressions being defined in part by a web extendingbetween thecylindrical walls of said body.

8. A cap organization comprising: a body member provided with anupwardly-facing annular depression adapted to contain both an annularspring and a gasket disposed thereabove; a closure plate pivoted to saidbody member and provided with an annular projection to engage saidgasket and also with a locking projection; and cam means movableperipherally of said body and adapted to engage said locking projectionand thereby to depress said plate and to compress said gasket.

9. A cap organization comprising: a body member peripherally carrying acam member having a handle; a lid member pivoted to said body member andprovided with a projection engageable, for a locking effect, by said cammember; and means operative to lift said lid member upon thedisengagement of said projection by said cam member.

10. A cap organization comprising: a lid member; a body member providedwith a downwardly facing annular depression adapted to receive a gasketand with an internal threaded portion therebelow; and a tubular elementprovided with a flange opposite said depression and with an externalthread therebelow,a gasket having an annular spring element thereabovebeing disposed in said depression.

In testimony whereof I aflix my signature.

JOHN F. WILSON.

